Hi
Date as DataType can't be edited when publishing the form to SharePoint, therefore your Workflow can not fillin the field.
You can change the field to DateTime in the InfoPath DataSource, this way the WF in SharePoint will be able to fill it in.
When you need the dateonly in InfoPath, format the field in InfoPath and keep the complete DateTime in the XML behing.
Have a look at my blig for several solutions for using Dates and InfoPath on http://BlueInfoPath.wordpress.com
Frederik Van Lierde
Blue InfoPath Blog ¦
SilverSands Associate ¦
Do you follow me already? ¦ We work smart, not hard
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